save project

123.py

+new_data=''
 with open(r'C:\Users\86152\Desktop\老八.txt','r',encoding='utf-8')as filel:
         for data in filel:
             if '小强;10本' in data:
-                print('数据在文件中')
-        
\ No newline at end of file
+                data=data.replace('小强;10本','小强;11本')            
+            new_data+=data
+
+with open(r'C:\Users\86152\Desktop\老八.txt','r',encoding='utf-8')as filel:
+    filel.write(new_data)
\ No newline at end of file